Thanks and well spotted! The audio was recorded and mixed over a period of around a month in my home studio mainly. The video was recorded in an afternoon - we did two more tracks. We wanted to record everything live but the logistics of actually having all those mics running in that enclosed space would have meant a load of baffles which would spoil the visual effect. Plus we already had all hands on deck doing this much :)

We do have live vids too but you can rarely get them slick enough for clients unless you have a whole field recording team! It's funny, people want to have their cake and eat it unfortunately :)